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Vibration Characteristics Analysis of the Rotating Blade Based on a Polynomial Aerodynamic Force

[+] Author Affiliations
Ming Hui Yao, Li Ma, Ming Ming Zhang, Wei Zhang

Beijing University of Technology, Beijing, China

Paper No. DETC2017-67162, pp. V006T10A040; 9 pages
  • ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 6: 13th International Conference on Multibody Systems, Nonlinear Dynamics, and Control
  • Cleveland, Ohio, USA, August 6–9, 2017
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5820-2
  • Copyright © 2017 by ASME


In this paper, aerodynamic expressions in forms of the series and the polynomial for a blade with low speed in low pressure compressor are deduced by numerical simulation. Considering shear deformation and cross-section warping effect, the blade is simplified as a pre-twist, pre-setting rotating cantilever plate, which subjected to the aerodynamic force and the centrifugal force. Based on the first-order shear deformation theory and von-Karman nonlinear geometric relationship, nonlinear partial differential dynamic equation of the rotating blade is derived by using Hamilton principle. Equations of motion are converted into a series of ordinary differential equations using Galerkin method. The dynamic frequency and the dynamic deformation of the blade are explored and contrasted with results obtained by finite element method. Effects of parameters on vibration characteristics of the blade under different rotation speed are analyzed. Results show that the explicit expression of the aerodynamic force for the blade has a good applicability.

Copyright © 2017 by ASME



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